Ventilating window lock



Patented Oct. 6, 1936 UNITED STATES 2,056,488 VENTILATING WINDOW LOCKMichael J. Sasgen, Matthias F. Sasgen, and Louis J. Sladek, Chicago,111.; said Matthias F. Sasgen and said Sladek assignors to said MichaelJ Sasgen Application November 22, 1934, Serial No. 754,274

4 Claims.

This invention relates to improvements in window locks and has specialreference to window locks which are adapted to permit either the upperor the lower window sash to be opened a limited amount for ventilation.

Important objects of the invention are, to provide alock of thecharacter mentioned which shall be simple and sturdy in construction;which can be easily applied to a window; which can be used either on theright hand side or the left hand side; and which can readily be set inwindow locking condition, or in non-operative condition, in which lattercondition the window may be freely openedto any extent desired.

The invention resides in a window lock having a base adapted to besecured to a side bar of an upper window sash at a suitable height abovethe meeting rails of the two window sash, and a locking lever pivotallymounted on the base to swing out into the path of the lower sash andmeans on the base for retaining the locking lever in locking position.The lever retaining means includes rigid abutments on the base betweenwhich the locking lever is received and means 2 for yieldingly holdingthe locking lever between the abutments.

The invention will be more readily understood from the followingdescription taken in conjunction with the accompanying drawing, forming30 part of this specification, and also with the appended claims whichformally define the invention.

7 In the accompanying drawing a preferred form of the invention isillustrated but it should be un- 35, derstood that the invention is notlimited to the specific construction shown except within the scope ofsaid claims.

In said drawing:

Fig. 1 is a front, fragmentary elevation of a pair of window sash with awindow lock embodying the invention fixed on the upper sash;

Fig. 2 is a vertical, fragmentary section on the line 2-2 of Fig. 1;

Fig. 3 is a fragmentary, horizontal section on 45 the line 33 of Fig. 2,showing the locking lever in lockingposition;

Fig. 4 is a sectional view similar to Fig. 3, but showing the lockinglever released and ready to be swung around out of locking position; and

50 Fig. 5 is a vertical section on the line 5--5 of Fig. 3.

The look, as shown in the drawing, is adapted to be secured to the uppersash ll] of a pair of vertically movable sash and so arranged as to 5permit the relative movement of the sash for a The side bar M of thesash frame upon which the 5 base is secured is usually formed somewhatinclined at its inner edge where the base II is secured and the base isprovided at one side with a tongue l5 which can readily be bent to fitflatly against the inner face of the side bar l4 as best 10 shown inFigs. 3 and 4, and is provided with a. hole to receive the fasteningscrew IS. The base proper fits against the inclined edge of the side barI 4 and is provided with two vertically spaced holes toreceive the otherfastening screws as best 15 shown in Fig. 2 I

The form of the base to fit around the inner corner of the side bar l4and the fact that it is secured by screws entering the side bar atdifferent angles affords a very strong mounting of the 20 base upon thesash and one which will withstand any reasonable force applied to causeit to give way. Between the screws l2 the edge of the base isturned upas shown at IE to form opposed abutment shoulders H. The metal of thebase is extended between the shoulders I! to form the tongue l5.

' A locking lever 18 is pivotally mounted on the base to swing parallelthereto and is adapted to be received between the opposed shoulders ll.The inclination of the base to the sash causes the free end IQ of thelever l8 to project inwardly over the lower sash 20 of the window and inposition to engage same when the sash are moved toward each other,either the upper sash being lowered or the lower sash being raised.

It will readily be'under'stood that the device can be used either on theright hand side or the left hand side of the upper sash, whichever ismore convenient as in each application the top- 40 most shoulder ll actsas the locking stop.

. The turned up edge portions 1 6 of the base have their free edges 21inclined to the base to form cams for lifting the lever I8, as it isswung around to enter between the shoulders ll. I The. lever l8 as hasbeen said is pivotally mounted at one end upon the base to swing aroundin a plane parallel thereto to place it in looking position between theshoulders I! and to place it in a non-locking position. This mounting,in the form of device shown, consists of a stud 22 projecting inwardlyfrom the base I l and provided on its free end with a head 23.

The inner end of the stud is made smaller in diameter than the body 25thereof to provide a shoulder for contact with the base and the stud issecured by riveting over the inner end of the smaller end 24 of thestud.

The inner end 26 of the lever I8 is provided with an opening 21 slightlylarger than the body 25 of the stud to permit the inclination of thelever on the stud in entering it between the shoulders I! and lifting itout again.

A compression spring 28 is arranged on the body of the stud between theinner end 26 of the lever and the head 23 of the stud to yieldingly'hold the lever pressed against theliase plate: Ill. The hole 21 in theinner end of the lever is enlarged as shown at 29, to receive and centerthe inner end of the spring 28.

It will be noticed that the shoulders I! are arranged between the leverpivot 22 and the free end of the lever I8 and substantially midwaybetween these points thus providing a device for the purpose which is asrigid and strong as possible to withstand any force applied to' open thewindow more than the device will permit.

The peculiar mounting of the lever on the base not only allows the leverto be readily swung into and out of locking position, but also serves tofrictionally retain the lever in any position it is swung to when inunlocking position as for instance in the downwardly hanging position asshown in dotted lines in Figs. -1 and 2.

It sometimes requires quite a pull on the free end of the locking leverl8 to lift it and free it from the locking shoulders, when it is desiredto swing it around to non-operative position, and the tongue l andthefastening screw l3 have been arranged in horizontal alignment with thelever I5 to best withstand this pull. -Without this inner fasteningscrew [3 the unlocking of the lever would tend to put too severe astrain on the securing screws 12 which would tend to loosen the devicefrom the window frame. Furthermore the stud 22, which forms the pivotupon which the locking lever I5 is mounted, is arranged beyond thevertical line connecting the fastening screws I! so that these screwsare positioned between the pivot of the lever and the locking shouldersIT and consequently the screws l2 are in the best position to resist anyforce which may be applied to the free end of the lever to open thewindow beyond the point permitted by the lever when in looking position.

It will now be understood that I have provided a very simple strongwindow lock, which can be readily manufactured at a relatively low cost,which can be applied with equal results to either the right or left sideof a window, and which can be very strongly secured in place by thesecuring screws to resist any unwanted force applied to the window sash.

As many modifications of the invention will readily suggestthemselves'to one skilled in the art, we do not limit or confine theinvention to the specific details of construction and operation hereinshown and described except, within the scope of the appended claims.

We claim:

1. In a device of the kind described, a base adapted to be secured tothe side bar of a window sash, a pivot pin secured to said base, alocking lever pivotally mounted adjacent one end on said pivot pin,locking shoulders on said base between which said lever is positionedwhen in windowlocking position, said lever being substantially parallelto said base but being so mounted on said pivot pin that its forward endportion may be swung away from said base to permit said forward endportion to pass over said shoulders while the rear end of said leverremains in contact with said base.

2. A window stop of the kind described comprising abase adapted to besecured to the side bar of an upper window sash, a locking leverpivotallymounted'on said base to swing substantially parallel to saidbase and to be projected into the path of a-lower sash, opposedshoulders on said base between which said locking lever is adapted to bepositioned when arranged to project in the path of the lower sash, theshoulders being provided with camming surfaces engaged by said lever asit is swung around to locking position to enable said lever to pass oversaid surfaces and between said opposed shoulders, the rear end of saidlever remaining in contact with said base during the swinging movementof said lever, and means for yieldably retaining said lever inposition-between said shoulders. I

3. In a device of the kind described, a base adapted to be secured tothe side bar of a window sash ina. position at an inclination to theplane of the sash, a pivot pin secured to said base, a locking leverpivotally mounted adjacent one end on said pivot pin, locking shoulderson said base between which said lever is positioned when inwindow-locking position, a camming surface on said base, said leverbeing substantially parallel to said base but being so mounted on saidpivot pin that its forward end portion, engaging said camming surface,may be swung away from said base to permit said forward end portion topass oversaid shoulder while the rear end of said lever remains incontact with said base, and means for yieldably'retaining said leverinadjusted position.

4. In a' device of the kind described, a base adapted to be secured tothe side bar of a window sash, a locking lever having an apertureadjacent one end thereof, a pivot pin on said base extending throughsaid aperture, locking shoulders on said base between which said leveris held-when in window-locking position, said lever being substantiallyparallel to said base but being so mountedon-said pivot pin that itsapertured end remains in contact with said base while its opposite endis swung away from said base to pass over one of said shoulders whenbeing placed between said shoulders, and a spring bearing on said leveradjacent said pivot pin for holding said lever in adjusted positionhorizontally, between said shouldersQor vertically, free of saidshoulders.

MICHAEL J. SASGEN.

MATTHIAS'F. SASGEN. LOUIS J. SLADEK.

